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EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
PSI 10000 4U Serie
3.5.4.3
Analog interface specification
Pin Name
Type* Description
Default levels
Electrical specifications
1 VSEL
AI
Set voltage value
0…10 V or. 0...5 V correspond
to 0..100% of U
Nom
Accuracy 0-5 V range: < 0.4% *****
Accuracy 0-10 V range: < 0.2% *****
Input impedance R
i
>40 k...100 k
2 CSEL
AI
Set current value
0…10 V or. 0...5 V correspond
to 0..100% of I
Nom
3 VREF
AO Reference voltage
10 V or 5 V
Tolerance < 0.2% at I
max
= +5 mA
Short-circuit-proof against AGND
4 DGND
POT Digital ground
For control and status signals
5 REMOTE
DI
Switches between
manual and remote
control
Remote = LOW, U
Low
<1 V
Manual = HIGH, U
High
>4 V
Manual, if pin not wired
Voltage range = 0…30 V
I
Max
= -1 mA at 5 V
U
LOW to HIGH typ.
= 3 V
Rec’d sender: Open collector against DGND
6
ALARMS 1
DO Overheating or
power fail alarm
Alarm = HIGH, U
High
> 4 V
No alarm = LOW, U
Low
<1 V
Quasi open collector with pull-up against Vcc **
With 5 V on the pin max. flow +1 mA
I
Max
= -10 mA at U
CE
= 0,3 V
U
Max
= 30 V
Short-circuit-proof against DGND
7 RSEL
AI
Set internal
resistance value
0…10 V or. 0...5 V correspond
to 0..100% of R
Max
Accuracy 0-5 V range: < 0.4% *****
Accuracy 0-10 V range: < 0.2% *****
Input impedance R
i
>40 k...100 k
8 PSEL
AI
Set power value
0…10 V or. 0...5 V correspond
to 0..100% of P
Nom
9
VMON
AO Actual voltage
0…10 V or. 0...5 V correspond
to 0..100% of U
Nom
Accuracy 0-5 V range: < 0.4% *****
Accuracy 0-10 V range: < 0.2% *****
at I
Max
= +2 mA
Short-circuit-proof against AGND
10
CMON
AO Actual current
0…10 V or. 0...5 V correspond
to 0..100% of I
Nom
11 AGND
POT Analog ground
For xSEL, xMON and VREF
12 R-ACTIVE
DI
R mode on / off
Off = LOW, U
Low
<1 V
On = HIGH, U
High
>4 V
On, if pin not wired
Voltage range = 0…30 V
I
Max
= -1 mA bei 5 V
U
LOW to HIGH typ.
= 3 V
Rec’d sender: Open collector against DGND
13
REM-SB
DI
DC output OFF
(DC output ON)
(ACK alarms ****)
Off = LOW, U
Low
<1 V
On = HIGH, U
High
>4 V
On, if pin not wired
Voltage range = 0…30 V
I
Max
= +1 mA at 5 V
Rec’d sender: Open collector against DGND
14
ALARMS 2
DO
Overvoltage alarm
Overcurrent alarm
Overpower alarm
Alarm = HIGH, U
High
> 4 V
No alarm = LOW, U
Low
<1 V
Quasi open collector with pull-up against Vcc **
With 5 V on the pin max. flow +1 mA
I
Max
= -10 mA at U
CE
= 0,3 V, U
Max
= 30 V
Short-circuit-proof against DGND
15
STATUS*** DO
Constant voltage
regulation active
CV = LOW, U
Low
<1 V
CC/CP/CR = HIGH, U
High
>4 V
DC output
Off = LOW, U
Low
<1 V
On = HIGH, U
High
>4 V
* AI = Analog Input, AO = Analog Output, DI = Digital Input, DO = Digital Output, POT = Potential
** Internal Vcc approx. 10 V
*** Only one of both signals possible, see section 3.4.3.1
**** Only during remote control
***** The error of an analog input/output adds to the general error of the related value on the DC output of the device
3.5.4.4
Resolution
The analog interface is internally sampled and processed by a digital microcontroller. This causes a limited resolu-
tion of analog steps. The resolution is the same for set values (VSEL etc.) and actual values (VMON/CMON) and
is 26214 when working with the 10 V range. In the 5 V range this resolution halves. Due to tolerances, the truly
achievable resolution can be slightly lower.
